I rely on SeatGuru for information about which are the good seats and which are the bad ones on planes. When you’re flying across country, as, for instance, I am on the trip I just booked via WestJet, having extra legroom can make all the difference between a relaxing, productive (with my laptop) trip, and five hours of pure hell, with some clown leaning his chair all the way back into my face.

SeatGuru — which is free to use — shows you every seat on every plane used by every major airline, and tells you about legroom, whether the seat tends to get cold, how well you can see the in-flight movie screens, etc. I love it.